Merge branch 'hotfix-0.1.8' into stable

parser.go

@@ -221,6 +221,7 @@ func (p *Parser) ParseShow() (ShowStmt, error) {
 				return nil, fmt.Errorf(ErrMsgSyntax, pattern)
 			}
 			stmt.With = pattern
+			stmt.UseWith = true
 		case STRING:
 			if clause == LIKE {
 				// Like clause can have a wildcard characters in the pattern.
@@ -239,6 +240,7 @@ func (p *Parser) ParseShow() (ShowStmt, error) {
 				stmt.Like = like
 			} else {
 				stmt.With = pattern
+				stmt.UseWith = true
 			}
 		default:
 			return nil, fmt.Errorf(ErrMsgSyntax, pattern)

parser_internal_test.go

@@ -199,15 +199,26 @@ func TestParser_ParseShow(t *testing.T) {
 		{
 			q: `SHOW TABLES WITH CampaignName;`,
 			stmt: &ShowStatement{
-				With: "CampaignName",
+				With:    "CampaignName",
+				UseWith: true,
 			},
 		},
 
 		// Show statement with a specific column.
 		{
 			q: `SHOW TABLES WITH "CampaignName";`,
 			stmt: &ShowStatement{
-				With: "CampaignName",
+				With:    "CampaignName",
+				UseWith: true,
+			},
+		},
+
+		// Show statement with no column.
+		{
+			q: `SHOW TABLES WITH "";`,
+			stmt: &ShowStatement{
+				With:    "",
+				UseWith: true,
 			},
 		},
 

statement.go

@@ -269,8 +269,9 @@ type DescribeStmt interface {
 // SHOW...FULL...TABLES...LIKE...WITH
 type ShowStatement struct {
 	FullStatement
-	Like Pattern
-	With string
+	Like    Pattern
+	With    string
+	UseWith bool
 	Statement
 }
 
@@ -312,5 +313,5 @@ func (s ShowStatement) LikePattern() (Pattern, bool) {
 // WithColumnName returns the column name used to search table with this column.
 // It implements the ShowStmt interface.
 func (s ShowStatement) WithColumnName() (string, bool) {
-	return s.With, s.With != ""
+	return s.With, s.UseWith
 }